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Author Question: Suppose we randomly selected 250 people, and on the basis of their responses to a survey we assigned ... (Read 159 times)

cabate

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on: Jun 24, 2018
Suppose we randomly selected 250 people, and on the basis of their responses to a survey we assigned them to one of two groups: high-risk group and low-risk group. We then recorded the blood pressure for the members of each group. Such data are called:
 a. observational. c. matched.
  b. experimental. d. None of these choices.

Question 2

One of the simplest ways to reduce random variation is to smooth the time series using moving averages and exponential smoothing.
  Indicate whether the statement is true or false


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asdfasdf

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Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

T


cabate

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Reply 2 on: Jun 24, 2018
:D TYSM

momolu

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Reply 3 on: Yesterday
Excellent

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